Kokkos Release Briefing 4.7 – August 2025

The Kokkos Team is inviting you to the Kokkos 4.7 release briefing.
The briefing will be held online on 27 August at 11:00 AM ET / 9:00 AM MT / 5:00 PM CET and will cover updates on changes in Kokkos from 4.6. The full changelog can be found at:

• https://github.com/kokkos/kokkos/blob/4.7.00/CHANGELOG.md#4700
• https://github.com/kokkos/kokkos-kernels/blob/4.7.00/CHANGELOG.md#4700

Community Updates

• Kokkos 5.0 release plan (C++ standard, interface updates, and deprecations)

Kokkos Core Key Changes

• Implementation of mdspan-based View introduced
• Support for new architectures: Ampere87, Intel DG2 GPUs, AMD Zen 5, and SiFive Unmatched Rev B
• Preference for direct use of fp16 mathematical functions to eliminate redundant fp32 conversions
• Introduction of SIMD SVE backend
• Enhancements to Graph functionality
• Fix for a bug where an MDRangePolicy of rank 4 or higher was incorrectly iterated, causing some iterations to be evaluated multiple times in large loops (HIP/SYCL)
• Fix for a sporadic failure in the ConstantMemory launch mechanism in HIP due to hipEventSynchronize error
• Deprecations in preparation for Kokkos 5.0

Kokkos Kernels Key Changes

• Two new batched band kernels: gbtrf and gbtrs
• Update dot product implementation (modern reducers) and benchmark
• Adding examples for batched factorization/solve: getrf-getrs, gbtrf/gbtrs, pbtrf/pbtrs, and pttrf/pttrs
• Performance improvement of sparse triangular solve with cuSPARSE